When organizing web data, you often encounter situations where .htm, .mhtml, and .html files are mixed together. This article uses HeSoft Doc Batch Tool as an example to explain how to use the "HTML to HTML" conversion function to batch convert various web page files into a unified .html format. The content includes applicable scenarios, comparison of effects before and after processing, detailed operation steps, and precautions to help users quickly standardize and organize web page files.
When archiving company materials, delivering projects, backing up web content, or migrating systems, many people encounter a detail issue: inconsistent web file formats. For example, within the same folder, there might be .htm files, .mhtml files, and files that are already .html. Although all these files can be recognized by browsers, having different extensions adds extra judgment costs during batch uploads, classification management, unified naming, and system imports.
If there are only a few files, manual organization might not be a major problem; however, once the number of files reaches dozens or even hundreds, opening, saving as, and renaming them individually wastes a significant amount of time. More troublesome is that manual operations are prone to issues like missed processing, duplicate processing, and saving files in the wrong location.
This article introduces a method more suitable for office scenarios: using the "HTML to HTML" feature of HeSoft Doc Batch Tool to batch convert web files like .htm, .mhtml, and .html into a unified .html format. This software is positioned as an office file batch processing tool, and its core value lies in centralizing repetitive, mechanical file processing tasks to improve organization efficiency.
Applicable Scenarios: Typical Needs for Unifying Web Files into HTML
Many users are puzzled: since both .htm and .html are web files, why bother converting them? The reason lies in the frequent need for "format unification" in office workflows. A unified format not only facilitates viewing but also aids subsequent system recognition and batch processing.
The following types of users are particularly suited to the method described in this article:
- Administrative and document management staff: Need to organize exported web materials, announcement pages, historical page backups, and archive them in a unified format.
- Project delivery personnel: Clients require submission of HTML files, but the project materials folder contains .htm or .mhtml files that need to be unified before delivery.
- Content operations staff: After exporting web content from different platforms, they need to standardize the file format to .html for subsequent editing, uploading, or backup.
- Technical support and operations staff: When migrating old sites, organizing offline pages, or importing into knowledge bases, they need to unify web files into HTML format.
- Personal data organization users: Web pages saved by browsers might be in MHTML format and need to be converted to the more common HTML file format for storage.
The common characteristic of these scenarios is a large number of files, diverse sources, and repetitive processing actions. The value of a batch processing tool lies in allowing users to set it up once and let the software continuously process multiple files.
Result Preview: From Mixed Web Formats to Unified HTML Files
Before Processing: Multiple Web File Extensions Exist in the Same Directory
In the screenshot before processing, we can see that the folder contains 4 web files: 1.mhtml, 2.htm, 3.htm, and 4.html. Their icons all show as web files that can be opened by a browser, but the extensions are inconsistent.
This situation is very common in practical work. For example, .mhtml might come from a complete webpage saved by the browser, .htm might originate from an old system export, and .html might come from a new system or be created manually. Mixed formats do not necessarily affect opening, but they do affect unified management. For instance, when searching for all HTML files, you might need to filter multiple extensions simultaneously; when uploading to a system, you might also need to organize the file formats consistently beforehand.

After Processing: All Files Unified to .html Extension
The screenshot after processing shows the final result: all 4 files have become .html format, specifically 1.html, 2.html, 3.html, and 4.html. This makes the structure of the web materials in the folder more uniform and more convenient for the next step.
The unified HTML files can be used for archiving, delivery, platform import, sending to colleagues, or continuing with other batch processing. For team collaboration, a unified format also reduces communication costs and prevents misunderstandings among different personnel about file types.

Operation Steps: Batch Converting HTM, MHTML to HTML
Below, using the operational flow in the screenshots as an example, I will explain how to complete the conversion in HeSoft Doc Batch Tool . The overall approach is: first select the feature, then import files, confirm the list before proceeding to the next step to set the save location, and finally start processing.
Step 1: Find "HTML to HTML" in Text Tools
After launching the software, you can see the product name is HeSoft Doc Batch Tool in the top left corner. The left side of the interface is a feature category navigation, including Home, Task Flow, All Tools, File Name, Folder Name, File Organization, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, etc.
Since we are processing web text-type files this time, select Text Tools on the left. Find "HTML to HTML" in the feature cards on the right. In the screenshot, this feature card is displayed as "11, HTML to HTML", with the description "Batch convert HTML files to HTML file format".
The expected result of this step is to enter the correct conversion feature interface. When selecting a feature, be careful not to click other features like "HTML to TXT", "HTML to Word", "HTML to PDF", or "HTML to Markdown", as their output targets are different.

Step 2: Add Files or Import Files from Folder
After entering the "HTML to HTML" feature, the top of the interface provides several operation buttons, including Add File, Import Files from Folder, Clear, and More. If the number of files to be converted is small, you can click "Add File"; if all web files are in the same directory, using "Import Files from Folder" is more efficient.
From the screenshot, we can see that 4 files have been imported, and the software displays their information in a table format, including sequence number, name, path, extension, creation time, modification time, and operations. This list view is very suitable for batch tasks because users can perform a unified check before execution, rather than discovering file selection errors only after processing is complete.
In this example, the imported files are located in the D:\test\ directory, including 1.mhtml, 2.htm, 3.htm, 4.html. The extension column clearly shows mhtml, htm, htm, html, indicating that although these files have different origins, they can all be included in this task of unifying the HTML format.

Step 3: Check the Pending Records to Avoid Misprocessing
Batch processing is efficient, but it also means that if a file is selected incorrectly, the error will be amplified in bulk. Therefore, before clicking the next step, it is recommended to carefully check the pending records. The bottom of the screenshot shows "Summary" "Record Count: 4", indicating that there are currently 4 files pending processing.
You can check in the following order:
- Check file names: Confirm that the files in the list are all web files that need to be converted this time.
- Check file paths: Confirm that the files come from the correct folder to avoid mixing in web files from other projects.
- Check extensions: Confirm that files like .mhtml, .htm, .html are all included in the list.
- Check quantity: Compare with the original folder count to ensure no files are missed.
If you find files that do not need processing, you can use the delete icon on the right side of each row to remove them; if the entire list is incorrect, you can click "Clear" and re-import. The screenshot also shows "Filter" and "Sort" buttons. When there are many files, these list auxiliary features help users verify data more quickly.
Step 4: Click "Next" to Enter Save Location Settings
After confirming there are no issues with the pending files, click Next at the bottom. The progress bar at the top of the interface shows that this feature consists of three stages: 1 Select Records to Process, 2 Set Save Location, 3 Start Processing. This indicates that the software does not process directly but first allows the user to confirm files, then set the output location, and finally execute the task.
In the save location setting stage, it is recommended to choose an independent output directory. For example, if the original folder is D:\test\, you can create a new "HTML Conversion Results" folder to save the converted .html files. The advantage of this is preserving the original files and keeping the conversion results clear, preventing them from mixing with the original files.
For formal office materials, especially client materials or project archives, it is recommended not to scatter conversion results randomly on the desktop or in temporary directories. A reasonable output directory name can include the project name, date, or processing type, such as "ProjectA_HTML_Unified_Format_20260611".
Step 5: Start Processing and View the Converted HTML Files
After setting the save location, enter the start processing stage. The software will execute batch conversion according to the previously confirmed file list, outputting the imported web files uniformly into HTML format. After processing is complete, go to the set save location to view the conversion results.
Based on the screenshot after processing, the final outputs are 1.html, 2.html, 3.html, and 4.html. The original 1.mhtml was converted to 1.html, 2.htm to 2.html, 3.htm to 3.html, and 4.html was kept and output as HTML format. This achieves the format unification for the same batch of web files.
It is recommended to do a simple spot check after processing is complete: open several converted HTML files to confirm they can be viewed normally; compare the count of output files with the import record count to ensure consistency; confirm that the file names meet the organization requirements. Once confirmed, they can be used for subsequent archiving, uploading, or delivery.
Common Questions and Notes
1. What is the difference between .htm and .html, and why unify them?
Both .htm and .html are common for web files. .htm was often used in earlier systems, while .html is more common now. Although many browsers can open both, from the perspective of material standardization, system import, and team collaboration, unifying them to .html is more convenient for management and identification.
2. Can .mhtml files also be included in the same batch task?
Looking at the screenshot example, the pending list contains 1.mhtml and enters the "HTML to HTML" task along with .htm and .html files. For scenarios requiring the unification of web file formats, these types of web files can be added to the list together for processing. It is recommended to keep the original files before processing for backtracking when needed.
3. Where will the converted files be saved?
The software flow includes a "Set Save Location" step. This means you need to specify the save location for the conversion results before starting processing. It is recommended to save the results in a new folder, not mixed with the original files, as this makes it easier to check the differences before and after processing.
4. What should be noted before batch processing?
Before batch processing, it is recommended to do three things: first, confirm the source of the files to avoid mixing in unrelated files; second, back up the original files to prevent irrecoverable loss from misoperation; third, confirm the output directory to avoid scattered or overwritten result files. Although these steps seem simple, they are very important when processing a large number of office files.
5. How to improve verification efficiency when there are many files?
If a large number of files are imported at once, you can use the extension, path, creation time, modification time, and other information in the list for checking. The screenshots also show "Filter" and "Sort" buttons, suitable for assisting searches when there are many files. It is advisable to confirm that the record count matches the actual number of files before officially starting processing.
6. Why is it not recommended to just change the suffix by renaming?
Manually changing .htm or .mhtml to .html might seem quick, but it essentially only modifies the file name and may not meet the actual file conversion requirements. Especially for web saving formats from specific sources like mhtml, it is more recommended to use a specialized batch conversion feature. This makes the process more standard and is more suitable for organizing formal office materials.
Summary: Reduce Web File Organization Costs with Batch Processing Tools
Inconsistent web file formats are a common but easily overlooked issue in material organization. Mixing .htm, .mhtml, and .html affects file filtering, system import, team collaboration, and long-term archiving. Using the "HTML to HTML" feature of HeSoft Doc Batch Tool , you can batch unify these web files into the .html format, making the file structure more standardized.
The example in this article demonstrated a typical workflow: before processing, the files included 1.mhtml, 2.htm, 3.htm, 4.html; in the software, enter Text Tools, select "HTML to HTML"; import files and confirm the list; click Next to set the save location; finally start processing. After processing, the files are uniformly changed to 1.html, 2.html, 3.html, 4.html.
For users who frequently need to organize web materials, process archived documents, or prepare data for system import, this type of batch processing method is more stable and efficient than manual, individual operations. It is recommended that the next time you encounter messy web file extensions, directly use a batch conversion workflow, leaving repetitive labor to the tool and saving time for more important content organization and review tasks.